403440113 has 4 divisors (see below), whose sum is σ = 404164980. Its totient is φ = 402715248.

The previous prime is 403440109. The next prime is 403440127. The reversal of 403440113 is 311044304.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 99042304 + 304397809 = 9952^2 + 17447^2 .

It is a cyclic number.

It is not a de Polignac number, because 403440113 - 2² = 403440109 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (403440173) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 361598 + ... + 362711.

It is an arithmetic number, because the mean of its divisors is an integer number (101041245).

Almost surely, 2^403440113 is an apocalyptic number.

It is an amenable number.

403440113 is a deficient number, since it is larger than the sum of its proper divisors (724867).

403440113 is an equidigital number, since it uses as much as digits as its factorization.

403440113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 724866.

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 403440113 is about 20085.8187037522. The cubic root of 403440113 is about 738.9125206287.

Adding to 403440113 its reverse (311044304), we get a palindrome (714484417).

The spelling of 403440113 in words is "four hundred three million, four hundred forty thousand, one hundred thirteen".